Carbon pack



April 4, 1939. w. F. SIMONSON CARBON PACK Filed July 6, 1936 E i/ma/vso/m INVENTOR.

ATTORNEYS.

/Z//A 4 MM Patented Apr. 4, 1939 UNITED STATES PATENT OFFICE CARBON PACK William F. Simonson, Forest Hills, N. Y.

Application July 6, 1936, Serial No. 88,969

2 Claims.

This invention relates to new and useful improvements in manifold writing devices and more (particularly it pertains to a carbon pack, particularly constructed and adapted for such use.

In certain types of writing, such for example, as manifold writing of bills upon continuous forms, a plurality of copies are made. In such writing a plurality of transfer sheets are interleaved with respect to the several formsland at certain times during the operation, either the forms are .moved relatively to the transfer sheets or the transfer sheets are moved relatively to the form as the case may be.

It is the object of the present invention to provide a new and improved carbon pack in the form of a plurality of superimposed transfer sheets which are adapted to be interleaved with respect to a plurality of bill forms preferably of the continuous type.

It is a further object of the invention so to construct the carbon pack that it may be readily attached to or detached from a transfer sheet carrier when it is in use or after it has been used to a degree that it has no further use.

It is a further object of the invention so to construct the carbon pack that it will be extremely simple of operation both in its attachment to the transfer sheet carrier and in placing it in registration or proper writing position with respect to the forms.

It is a still further object of the invention to provide a device of the above mentioned character which is relatively cheap of manufacture and simple in operation.

With the above and other objects in view reference will be had to the following specification and claims and the accompanying drawing, wherein:

Figure l is a distended perspective view illustrating a carbon pack and carrier constructed in accordance with the present invention,

Figure 2 is a fragmentary top plan view showing the carbon pack per se attached to the transfer sheet carrier,

Figure 3 is a detail sectional view taken substantially on the line 3-3 of Figure 2,

Figure 4 is a detail sectional view taken substantially on the line 4-4 of Figure 2,

Figure 5 is a fragmentary top plan view illustrating a modified form of the invention, and;

Figure 6 is a transverse sectional view taken substantially on the line 6-6 of Figure 5.

The carbon pack per se comprises a plurality of transfer sheets of general rectangular form. The end ll of the transfer sheets is narrower than the opposite endl2 thereof, the side edges of said transfer sheets being cut away as at 13 from a point adjacent the end l2 to the end ll.

These sheets are preferably separate from'one another. In'building up the carbon pack the 5 desired number of transfer sheets ID are placed in superimposed relation'and are adapted to be secured together either temporarily or permanently, the former being preferred. For securing the several transfer sheets together in a 10 pack or unit, a combined strip I6 is employed. This binding strip is preferably formed from flexible material such as paper or the like and is of a length greater than the extreme width of the transfer sheets Hi. This binding strip is 15 positioned upon the superimposed transfer sheets at the widest end thereof, and in the form of the invention illustrated in Figures 1 to 4, inclusive, it is secured to the transfer sheets by means of clips or the like [4 which may be of 20 any conventional design. When the binding strip i6 is secured in proper position upon the transfer sheets, its ends ll project beyond the side edges of the transfer sheets as illustrated in Figure 1.

So far as described the device comprises the commercial package. It is, however, not in its best form for use and in order to render this use more practical, it is adapted to be attached to a carbon carrier.

This carbon carrier is designated 20 in the drawing, and it comprises a substantially elongated rectangular body portion of semi-flexible material. The material may be metal, cardboard or any other material having the proper 35 degree of flexibility. This carrier is provided near each end on one of its side edges with an upturned lip 2! which particularly adapts the carrier to use in connection with the manifold writing attachment for typewriters illustrated 40 and described in a co-pending application, Serial No. 693,048, filed by me on the 11th day of October, 1933. Directly to the rear or at the base of each of these lips 2! there is an opening 32 and said openings cooperate with certain mechanism described in my above mentioned copending application. The'body portion of the carrier may be roughened in any desired manner as at 33 and in attaching the transfer sheets or carbon pack to the carrier, it is placed with the bottom of said transfer sheets in engagement with the roughened portions 33 of said carrier. With the transfer sheets in this position the ends I! of the binding strip [6 are folded around the ends of the carrier 20, as illustrated at 35 in Figure 3. After this has been accomplished spring clips 36 are slipped over the binding strip to secure the same to the carrier 20 to provide a carbon pack complete for use in manifold writing. It is to be understood that after the carbon pack has been attached to the carrier 20 the clips [4 are removed, the spring clips 36 being quite sufficient to retain the parts in assembled relation during the use of the device.

In Figures 5 and 6 the several parts are of substantially the same construction as described hereinbefore, the only difference being that in said Figures 5 and 6 the binding strip which is designated 40 is permanently secured to the transfer sheets 4| by means of a staple 42, as best illustrated in Figure 6.

From the foregoing it will be apparent that the present invention provides a new and improved carbon pack which, although it mayhave many uses, is particularly adapted for use in the writing of manifold forms such as employed in so-called continuous billing apparatus.

While theinvention has been herein illustrated and described in its preferred form it is to be understood that it is not to be limited to the specific construction herein shown and that it may be practiced in other forms without departing-from the spirit thereof.

Having thus described the invention, what is claimed as new, is:

1. A carbon pack for manifold writing comprising in combination, a plurality of superimposed transfer sheets, a binding strip extending from one edge to the opposite edge of the transfer sheets and being of greater length than the distance between said edges, means for securing the binding strip to one face of the transfer sheets with the transfer sheets disposed intermediate the ends of the strip, a flexible carrier plate bearing on another face of the transfer sheets, said plate being elongated in a direction transversely of the transfer sheets to furnish a support for a part of the area of said transfer sheets and the plate being no greater in length than the distance between the aforesaid edges, the free end portions of the binding strip overlapping respectively the corresponding edges of the transfer sheets and the ends of the carrier plate at each side of the transfer sheets, and a clip embracing the overlapped ends of the binding strip and also another portion of the strip adjacent the overlapped portion thereof to removably attach the transfer sheets to said carrier plate.

2. A carbon pack for manifold writing comprising in combination, a plurality of superimposed transfer sheets, a flexible carrier plate bearing only on one face of the transfer sheets, said plate being elongated in a direction transversely of the transfer sheets to furnish a support for a part of the area of the transfer sheets, said plate being of no greater length than the transverse dimension of the transfer sheets, a pair of clips, one being disposed on each side of the transfer sheets, and the clips embracing the corresponding edges at the ends of the carrier plate and the side edges of the transfer sheets to removably attach the transfer sheets to said carrier plate.

WILLIAM F. SIMONSON. 

